This post originally appeared in the Huffington Post.

Later this month, the Supreme Court will hear arguments in one of the most closely-watched cases in its history: the challenge to the 2010 Affordable Care Act. But in the weeks leading up to those arguments, another fight will be taking place in the U.S. Senate on an issue that in many ways parallels the health care debate, and offers an even clearer view of what have become the policy priorities of the Republican Party.

Since Obama became president, Republicans in Congress have made a clear and conscious choice to kill any attempts to cooperate with him to create solutions for the American people. They have chosen instead to devote themselves to be the party of opposing President Obama – on every issue, big and small. In doing so, they have thrown out not only the trust of the people who elected them, but many of their own formerly held principles.

Even ideas that originally came from Republicans, once adopted by the president become grounds for all-out partisan attacks. One such Republican idea was the individual mandate, which is now at the center of the legal and political challenges to the Affordable Care Act.

Ironically, the judicial branch – to which Republicans are turning with hopes that the policy they came up with is declared unconstitutional – is also at the heart of another stunning turnaround. Republicans used to talk about the importance of bipartisan cooperation in ensuring a fair and functioning judiciary. But that changed abruptly in January 2009, when the political party of the president changed.

When it comes to health care reform, Republicans have chosen to ignore their previous positions in an effort to stick it to the president.

When it comes to the functioning of the federal courts, they have so far chosen to do the same.

This week, Republicans in the Senate, after three years of obstructing nominees to the U.S. courts — contributing to a historic vacancy crisis that affects over 160 million Americans — will have to make the same choice. Senate Majority Leader Harry Reid has announced he will file petitions to end the filibusters of 17 nominees to district courts around the country, most long-stalled and unopposed. These, plus the two Obama nominees who have already been filibustered, represent nearly ten times the number of district court nominees who were filibustered under the last two presidents combined. The cumbersome process to end these filibusters will, if Republicans don’t relent, tie up the Senate through early April.

During George W. Bush’s presidency, Senate Republicans were near-universal in their condemnation of the filibusters of some of Bush’s most extreme judicial nominees. Many went so far as to claim that filibustering judicial nominees was unconstitutional.

Once President Obama moved into the White House, it was remarkable how fast they changed their tune. They went overnight from decrying judicial filibusters, to using them wantonly — not just to stall nominees to whom they found objections, but to stall all nominees , even those whom they favor. At this point in Bush’s presidency, the average district court nominee waited 22 days between approval from the Senate Judiciary Committee and a vote from the full Senate. Under President Obama, the average wait has been more than four times longer – over three months.

This is gridlock for gridlock’s sake: once Republicans allow them to come to a vote, the vast majority of the president’s nominees have been confirmed with overwhelming bipartisan support, demonstrating that the opposition to these nominees was never about their qualifications.

This is more than an inside the beltway partisan game — it has helped to create a historic vacancy crisis in the federal courts. Approximately one in ten federal courtrooms today sits empty because of Senate inaction. These vacancies create unmanageable workloads for sitting judges, which in turn cause unacceptable delays for Americans seeking their day in court. The Republican Party has been so intent on obstructing President Obama’s agenda that they’ve been willing to sacrifice the smooth functioning of America’s courts

. The health care debate highlights the importance of appointing judges who place their duty to the Constitution over a partisan agenda. But it also crystallizes the agenda of opposition that has caused the Republican Party to go off the deep end. When a party’s only principle is to be opposed to the other party’s agenda, it’s the American people who end up paying the price.